What do you do when you think that a pattern has errors in it? I'm not experienced enough to figure out how to fix it. I think there is an error because I've worked the pattern, ripped it out, then worked the pattern out on paper by drawing 31 "sticks" and marking off the stitches and still can't get it to work out right.

I have 31 stitches on the needle for this portion, the directions are: P2, *(KPK all in one st, p3tog) 3 times, p2, rep from *once more, K1, sl (place marker).